I'm wondering if it's too dangerous.
Ricky LOVES to chew on ice. I asked our Vet about this and he recommends against it because it could crack the enamel on the teeth and then you have a significant dental problem. So we now freeze water in a Kong and let him lick the ice while it un-freezes. He chews on the outside of the Kong which wont harm his teeth and licks the ice. It is a Win/Win for everyone.